Actuator Control via Sensor Data Preprocessing
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Solution Overview
Problem
Current motor vehicle chassis control systems transmit and process excessive sensor data, leading to inefficiencies and delays, which can impact the timely and accurate control of actuators, especially when navigating uneven terrain.
Innovation Solution
A method and system that preprocess and filter sensor data to selectively transmit only necessary values for actuator control, using a dual-control device structure with a sensor-associated control device for preprocessing and an actuator-associated control device for temporal filtering, enabling predictive and efficient control of actuators.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all sensor values are transmitted to the actuator-associated control device, then complete information is available for control, but data transmission volume and processing time increase
Solution Approach 1:
The sensor-associated control device extracts only the necessary control-relevant values from the complete sensor data set before transmission. This extraction process removes unnecessary information while retaining only what is needed for actuator control, thereby reducing transmission volume and processing time without compromising control effectiveness.
Solution Approach 2:
The control system is segmented into two functional parts: a sensor-associated control device that performs preprocessing and value selection, and an actuator-associated control device that receives only the necessary filtered values. This segmentation allows distributed processing where complex preprocessing occurs at the sensor side while the actuator side receives simplified data.
2Productivity
If sensor data is preprocessed and filtered before transmission, then data transmission efficiency improves, but processing complexity increases at the sensor-associated control device
Solution Approach 1:
The sensor-associated control device performs preliminary preprocessing actions on sensor data before transmission occurs. By conducting local filtering and value selection in advance, the system prepares the data optimally for transmission, reducing the burden on the communication system and actuator control device while maintaining high transmission efficiency.
3Measurement precision
If temporal filtering is applied at the actuator-associated control device, then control accuracy improves, but response time may be affected
Solution Approach 1:
The system applies partial temporal filtering by selecting only those filtered values that are necessary for immediate actuator control. Rather than applying extensive filtering that would maximize accuracy but slow response, the system uses selective filtering that provides sufficient accuracy while maintaining fast response times appropriate for dynamic terrain navigation.
Data Source
AI summary
The invention relates to a method for controlling at least one actuator (16, 18) for a chassis of a motor vehicle, in which at least one sensor (10, 12, 14) of the motor vehicle determines values of at least one measurement variable for sensing an environment of the motor vehicle, wherein the determined values are preprocessed, wherein only the values needed to control the at least one actuator (16, 18) are transmitted from a control device (4) associated with the sensor to a control device (6) associated with the actuator and are temporally filtered by the control device (6) associated with the actuator, and wherein the control device (6) associated with the actuator uses the temporally filtered values to provide actuating signals for the at least one actuator (16, 18).